Com5/6/7/8/9/10 Matching Resistor Select Jumper; Com9/Com10 Ri/5V/12V Power Supply Select - JHCTech KMDA-2702 User Manual

2.3.4 COM5/6/7/8/9/10 Matching resistor Select Jumper

NOTE: JP2/JP4/JP6/JP8/JP10/JP12 corresponds to COM5/6/7/8/9/10.

2.3.5 COM9/COM10 RI/5V/12V Power supply Select

NOTE: Pin 12 and 34 are for COM9; Pin 56 and 78 are for COM10.
Figure 2.9
Figure 2.10
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User's Manual